Button-hole-cutting attachment for button-hole sewing-machines



(N0 MOCCI.) F. -w-l BUTTON HOLE CUTTING ATTACHMENT FOR BUTTON HOLE SEWING MACHINES.

No. 303,454. I Patented Aug. 12, 1884.

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FREELAND IV. OSTROM, OF TROY, NE? YORK, ASSIGNOR TO THE \VHEEL all & IVILSON MANUFACTURING COMPANY, OF BRIDGEPORT, CONNECTICUT.

BUTTON-HOLE-CUTTING ATTACHMENT FOR BUTTON-HOLE SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 3035,452 dated August 12, 1884-.

Application filed July 20, 1883. Renewed June 11, 1884. (No model.)

To aZZ whom it may concern- Be it known that I, FREELAND W. OSTROM, of Troy, county of Rcnsselacr, State of New York, have invented an Improvementin But 5 ton- H010 Cutting Attachments for Button Hole Sewing-lllachines,of which the following description,in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention has for its object the construction of a simple mechanism by which the cloth or material in which a button-hole is to be cut and worked maybe quickly and accurately out after the cloth or material had been clamped 1 under the foot of the clothcarrier or clamp.

In this my invention Ihave removed from the sewing-machine the usual presser-bar, and in place of the same have substituted a cutter bar provided at its lower end with a buttonhole cutter, and to secure the correct alignment of the cutter with the center of the foot of the clamp I have provided the said bar with a guide. The bar is normally kept in elevated position by a spring, and the pin and guide re- 2 ferred to,when the bar is elevated, cause it to be so turned about its center as to throw the button-hole cutter away from under the needlebar. The throat-plate is provided with a pivoted arm,which serves as a cooperating mem- 0 her for the cutter carried bythe bar.

Figure 1, in side elevation, represents a suffieient portion of abutton-holesewing-machine to illustrate myinvention; Fig. 2, a right-ban d end view of Fig. 1, but with the cutter-bar forced partially down. Fig. 3 shows the pivoted arm of the throat-plate, and Fig. 4. a detail of the pin and guide for partially rotating the cutter-bar.

Referring to the drawings, G G H represent 0 the clamp which holds and moves the material in which the button-hole slit is to be cut, and worked by a sewing-machine such as represented in my application N 0. 102,321, filed July 30, 1883, to which reference may be had, the parts herein the same as in the said application being designated by like letters. The overhanging arm and head A, as herein shown, is that common to the \Vheeler& WVilsonmachine. Havingremovedthe usualpresser-bar, I attach to the head a sleeve, n having an irregular slot, a, which is adapted to re ceive a pin, a in the cutter-barn,which isinsorted in the head A, instead of the usual presser-bar. This bar is passed down through a spiral spring, 0, supported at its lower end by the head, and an adjustable collar, 0", secured to the bar a rests upon the upper end of the spring, so that the latter normally acts to keep the bar 11f elevated, as in Fig. 1, with the pin a" in the upper end of the slot at, as in Fig. 4, which so rotates the bar a that the blade or cutter a, attached thereto by the screw n is turned to one side away from the open top of the foot H of the cloth-clamp. The cloth having been properly clamped, and the clamp being in position, as described in my said application, to commence the stitching of a button-hole,the operator will strike, by hand or otherwise, the head 0 of the bar a and will depress the same, causing the cutter or blade to pass down through the top of thefoot H of the cloth-clamp, and through the cloth clamped between its jaws, cutting a hole ontirely through the cloth or material centrally with relation to the foot II,"and in the line of the feed of the cloth from end to end of the button-hole under the needle 48. In the descent of the bar it, as soon as the pin it reaches the vertical part of the slot if, the cutter or blade a is brought into central position (see Fig. 2) with relation to the foot H, and thereafter during the further descent of the bar a it does not rotate.

To constitute a lower member or ashear-like device to co operate with the blade a, the throat-plate p is provided with an arm, 1) pivoted at p, and acted upon by a spring, p there being between the edge 2) of said arm and the edge 19 of the said threat a slit, down into which the cutter or blade descends after passing through thematerialheld by the clamp, the descent of the cutter or blade being regulated by the adjustable collar 1) 011 the bar a which comes against the top of the sleeve a As soon as the slit has been cut in the cloth, 9 5 the spring 0 quickly lifts the bar into the position, Fig. 1.

I claim- 1. In a sewing-machine,the head Aha clamp to hold and feed the material, and a cutter-bar IOO combined with a guide 1 vided with a blade to out the material while and a suitable pin eo-operating therewith, l held by the clamp immediately below thenee- 15 whereby the bar will be partially rotated about dle, combined with a spring to elevate the said its axis during its descent to bring the edge of bar, and wit-h means,substantially as described, the blade in the proper central position with to regulate the extent of its downward motion, relation to and to out the material held by the 1 as and for the purposes set forth. clamp, the said bar during its ascent being Intestimonywhereof I have signed mynaine 2o turned in the opposite direction to remove the to this specification in the presence of two subblade from the path of the needle and needlescribing witnesses. bar, as and for the purposes set forth. FREELAND \V. OSTROM.

2. In a button-hole sewing-machine, a clamp XVitnesses: to hold and feed the material, a reciprocating IsAA'e HOLDEN, and partially rotating cutter-carrying bar pro- LOUIS H. BAKER.

provided with a blade, 

